Cross the threshold of the final frontier as mankind embarks on the greatest adventure of all time: space travel. From heroic space pioneers to modern-day cliff-hanger missions, it's a thrilling look at humanity's quest to conquer space. Be there with astronaut Michael Foale as he survives a harrowing orbital collision onboard the Russian space station Mir. Relive the triumphs and tragedies of space exploration, and see how Cold War adversaries are now combining their expertise in projects like the floating Sea Launch platform.

Meet the scientists of SETI, the Search for Extraterrestrial Intelligence, who monitor the radiowaves of deep space and learn why they agree that life as we know it can exist in many places in the universe.

Known Universe explores some of the most fascinating mysteries of our universe. From the search for alien life and killer asteroids to sun storms and massive volcanoes, Known Universe illuminates the latest research with “you are there” computer animations and dramatic time-lapse sequences.

Known Universe Season Three journeys to the farthest reaches of the universe to explore the most powerful stars, to study the biggest cosmic blasts and to examine how the newest technologies can help humans build for the future and survive the dangers of space.

Explore the miraculous potential and frightening possibilities of genetic cloning as National Geographic's cameras reveal the history, controversy, and cutting-edge developments of a scientific breakthrough capable of literally changing the destiny of the human race. Witness the remarkable effects of the cloning revolution, from frozen zoos to super chickens to companies that offer DNA copyright for celebrities. Explore the "brave new world" of the emerging human cloning industry that some welcome as a godsend and others denounce as playing God. Experience the moving personal stories of people desperately awaiting the life-or-death benefits of "spare parts" and reproductive cloning. From ethical dilemmas to science-fiction scenarios, it's a thought-provoking look at the ultimate technological Pandora's box.

When the NASA rovers Spirit and Opportunity touched down on Mars in 2004, they weren't expected to last longperhaps 90 days, or six months at most. But 90 days stretched into five years, and a short-term science mission searching for evidence of water has turned into one of the greatest adventures of the Space Age. The rovers have trekked miles across hostile plains, climbed mountains, ventured in and out of deep craters, survived dust storms and mechanical failures, and cheated death so often that no one will venture a guess as to how much longer they might last.

In the vast expanse of space, nothing matters more than speed. Whether we're venturing out to the farthest reaches of our solar system or exploring the mysteries of time travel and wormholes, speed is the key. With stunning CGI and riveting footage, Known Universe: The Fastest explores interstellar travel, wormholes, and black holes and re-examines Einstein's theories that hint at the existence of portals that could reach through the very fabric of space and time.

Scientists believe that our universe started with a colossal explosion called the Big Bang. That powerful blast created all the matter in the universe and laid the groundwork for every explosion since. From exploding stars to asteroid impacts, Known Universe: The Most Explosive deconstructs some of the biggest explosions in the universe with unforgettable CGI and slow-motion footage. Even a devastating earthquake would be tiny compared to what would happen if an asteroid six miles across slammed into Las Vegas. In spectacularly realistic CGI, experience the impact and its blistering shockwave. Discover how scientists have devised strategies to harness the sun's explosive power to divert dangerous meteorites from slamming into the Earth.

From the enormous universe in which we exist to tiny atoms that make up the building blocks of everything around us, size matters when it comes to understanding the cosmos. Starting with our solar system, National Geographic explores the true meaning of the words "big" and "small". Our neighborhood of planets may seem vast but compared to the size of our Milky Way galaxy, our solar system is really tiny. And our galaxy is only one of about 100 billion galaxies in the cosmos. But every giant object in our expansive universe is made of tiny bits of matterthe atomwhich is a universe within itself on a minute scale. Peer into the atomic world where scientists are using nanotechnology to develop lifesaving cures and ingenious inventions.

Journey into the depths of outer space in this five-disc voyage throughout the cosmos. Explore the galactic effects of black holes, relive the excitement of the first lunar landing with never-before-seen spectacular images of the moon and Earth, and transport yourself to the corners of the universe using breath-taking CGI technology and images from the Hubble Space Telescope.

Get a taste of our most popular current series and recent favorite specials with the third volume of our Best of National Geographic Channel DVD Collection. Includes one episode each from Wicked Tuna, Doomsday Preppers, and Border Wars, along with World's Biggest Cave and Known Universe: Most Powerful Stars. See the Title List tab for more information.

It is a World Heritage site, an International Biosphere Reserve, the most famous wetland on earth, and a cultural iconfeatured in everything from Spiderman comics, to the classic movie African Queen. It's America's most controversial and endangered National Park, andwith $7.8 billion aimed at its restorationit's also the most political. The Everglades is many things to many people, but above all else, it is a wilderness1.5 million acres of the most extraordinary and unique habitat. 1,100 species of plants and 350 species of birds live here for at least part of the year, and some of those species live nowhere else on earth. We'll journey into the Everglades on foot, by airboat, on a helicopter and by kayak to see what secrets this wild space is hiding.

Over the last three decades, science has been advancing our understanding of stresshow it impacts our bodies and how our social standing can make us more or less susceptible. From baboon troops on the plains of Africa, to neuroscience labs at Stanford University, scientists are revealing just how lethal stress can be. Research tells us that the impact of stress can be found deep within us, shrinking our brains, adding fat to our bellies, even unraveling our chromosomes. Understanding how stress works can help us figure out ways to combat it and how to live a life free of the tyranny of this contemporary plague. In Stress: Portrait of a Killer, scientific discoveries in the field and in the lab prove that stress is not just a state of mind, but something measurable and dangerous.

Hosted by renowned astrophysicist Neil deGrasse Tyson, Cosmos: A Spacetime Odyssey explores how we discovered the laws of nature and found our coordinates in space and time. It brings to life never-before-told stories of the heroic quest for knowledge and transports viewers to new worlds and across the universe for a vision of the cosmos on the grandest scale.

Human babies come into this world entirely helplessunable to walk, talk, or feed themselves. And, as any parent can testify, a remarkable transformation occurs over their first year. But what's happening behind what you can simply observe? From first breath to first step, National Geographic sheds light on the amazing developments in the first 12 months of life and how new research indicates that these growing abilities are much more flexible than previously known. Follow leading scientists as they study the remarkable plasticity of a very young brain, measure how early experiences influence the course of human development and deconstruct how babies can learn languages and even grasp math!

What really happens when 30 million volts of electricity charges through your body and you survive being struck by lightning? Now, meet survivors who live to tell their tale of being hit by a force that is faster than a speeding bullet and five times hotter than the sun as National Geographic unravels the science behind one of nature's most mysterious phenomena. With revolutionary brain imaging technology and 3-D CGI, travel inside the human body along the path of a lightning bolt.

An eruption of Santorini some 3,600 years ago was one of the largest, yet most mysterious, natural calamities in human history and may have wiped out an entire civilization. Much of the evidence of its destruction has been lost at sea until now. National Geographic Explorer-in-Residence Robert Ballard and an international team of volcanologists, armed with a state-of-the-art Remote Operated Vehicle fitted with HD cameras, dive into the belly of the Santorini's submerged caldera.

Revisit the site of one of the most expensive natural disasters in American history. Through riveting stories of eyewitnesses, relive the infamous 1994 Northridge Earthquake that released more than 5 megatons of explosive force throughout the Los Angeles region. Learn how cutting edge seismic and structural testing can help save lives and better prepare us for the next big earthquake.

In the brief but brilliant "Age of the Helicopter," there have been many contenders for the title of "Super Copter", but one of the newest copters that brings it all home is the EH101. Recently chosen to be the next "Marine One"the Presidential Helicopter, the EH101, will be specially outfitted as the new Oval Office in the sky. Helicopters are a monumental human achievement, a technological feat that's become so common place we don't blink an eye at them anymore. But National Geographic takes you for a ride on the EH101 to see why you might want to take a second look.

Where and when the next mega disaster will strike volcanic eruption, earthquake, tsunami or hurricaneis the focus of Violent Earth. Join tsunami scientist Jose Borrero of the University of Southern California on his trip to visit Banda Aceh with a National Geographic film team, barely one week after the December 26, 2004, tsunamia tsunami so strong it actually moved the island of Sumatra a hundred feet.

The idea that a building’s walls will stand up seems as safe a bet as gravity's pull or the sun's rising. Most of us don’t worry much about whether our apartments, offices, supermarkets, or schools are going to collapse on us as we go about our daily routines. But should we? National Geographic takes a look at buildings around the world that despite having appeared structurally sound, some for years on end, came crashing down in a moment's notice. Dig deep into the histories of these buildings to discover why.

Death: it fascinates, it frightens, and those who face it and survive often look at life in a whole different way. National Geographic's Moment of Death looks at what happens to us when we die, why dead isn't always dead, and how mind and the body sometimes challenge science when it comes to the tipping point between life and death.

National Geographic gets to the science behind what makes a man manlyhis Testosterone Factor. It's one of the most important and powerful hormones in a man's body, but how does testosterone really impact his strength, status, success, and even commitment?